A514grf-a514grq Wuyang Steel wyj302-2011 standard

  Technical agreement for trial production of a514grf and a514grq certified steel plates supplied by Yizhong 1 Scope of application , This technical agreement is applicable to the technical requirements, test methods, monitoring rules, packaging, marks and quality certificates of a514grf and a514grq steel plates with a thickness of 25
4-152
4mm for the equipment and materials of heavy shovel 2
  Reference standard , The terms of the following standards constitute the terms of the technical conditions through reference in the technical conditions
For dated referenced standards, subsequent amendments (excluding Corrigendum) or revised versions are not applicable to this standard
For undated referenced standards, the latest edition is applicable to this standard ASTM A514/A514M-05   High Yield Strength Quenched and tempered alloy steel plate suitable for welding , ASTM A6/A6M   General technical conditions for hot rolled structural steel bar, steel plate, section steel and pile plate , ASTM A370   Mechanical test methods and definitions of steel products , ASTM A751   Standard methods, practices and terms for chemical analysis of steel products , ASTM A578   Standard for ultrasonic direct wave inspection of rolled steel plates for special purposes , ASTM E112   Determination method of average grain size of metals , ASTM E10   Measurement method of Brinell hardness of metal materials 3
  Dimension, shape, weight and allowable deviation , The dimension, shape, weight and allowable deviation shall comply with the provisions of ASTM A6 / A6M 4
  Technical requirement 4
1 chemical composition (melting analysis and finished product analysis) shall comply with the provisions in Table 1 Table 1: chemical composition (mass fraction),%

Brand	C	Si	Mn	P	S	Ni	Cr	Mo	V	Cu	B	Ceq
A514GrF	0 10 0 20	0 10 1 35	0 601 00	& le; 0 035	& le; 0 008	0 70 1 00	0 40 0 65	0 40 0 60	0 03 0 08	0 15 0 50	0 0005 0 006	0 45 0 79
A514GrQ	0 14 0 21	0 15 0 35	0 95 1 30	& le; 0 035	& le; 0 008	1 20 1 50	1 00 1 50	0 40 0 60	0 03 0 08	/	/	0 691 02
Note: carbon equivalent is calculated according to CEQ (%) = C + (Mn + Si) / 6 + (Cr + Mo + V) / 5 + (Ni + Cu) / 15

  4
2 smelting method: electric furnace + Le / VD refining, calcium treated fine grain pure killed steel, austenite grain size ≥ Level 5 4
3 delivery status: quenching and tempering (quenching + high temperature tempering) 4
4
1 the mechanical properties shall meet the requirements in Table 2 Table 2: mechanical property requirements

Brand	Thickness (mm)	Tensile test				- 40° C transverse impact test, (J)	Hardness HB	180° Cold bending ① ②
		Rpo 2 (horizontal) [MPa]	RM (transverse) [MPa]	A50 [%]	Reduction of area Z [%]
A514GrF	8-64	& ge; 690	760~895	& ge; 18	& ge; 40